Say what you will about Justin Bieber, but the kid’s hair owns Hollywood right now. If you’re a dreamy male hunk or an awkward pre-pubescent hunk-in-training, chances are you’re rocking that sideswiped bowl cut known simply as The Bieber.

Bieber can sing, but it’s the ’do — part Beatles, part “High School Musical” — that keeps America coming back for more. But Bieber’s got competition from other mop-topped moppets. It’s the hair battle to end all hair battles.

The Post is laying odds on who can beat Bieber at his own freshly shampooed game — and offering the alternate style when The Bieber just no longer cuts it.

The Upstart: Greyson Chance, 12

* Hometown: Edmond, Okla.

* On his hair: He has yet to address it, but he tweeted that he hopes Bieber will “take me on tour one day.”

* Biggest threat to hair:

Over-flipping, which was a distraction on his “Ellen” debut.

* Most known for: Being a YouTube star for his performance of “Paparazzi” at a sixth-grade talent show.

* Singing ability: Chills-inspiring.

* Why he wears it best: He’s more authentic than polished Justin.

* Best alternate style: Bowl cut, but shorter.

* Odds on beating Bieber in popularity: 2 to 1

The Gossip Boy: Chace Crawford, 24

* Hometown: Dallas

* On his hair: “It wasn’t intentional!” he told People when his bangs were taken off briefly.

* Biggest threat to the hair:

Growing up.

* Most known for: Starring as bad-yet-nice-boy Nate Archibald on “Gossip Girl.”

* Singing ability: Not so great — he dropped out of “Footloose,” where vocal ability was a requirement.

* Why he wears it best: More mature, less gimmicky.

* Best alternate style: Faux-hawk.

* Odds on beating Bieber in popularity: 50 to 1

The Disney Doll: Jason Dolley, 18

* Hometown: Los Angeles

* On his hair: He told BOP magazine, “Hope you guys like it. I’m still kind of getting used to it.”

* Biggest threat to the hair: It’s too long and unkempt.

* Most known for: Disney Channel projects, including his recent turn as PJ Duncan in “Good Luck Charlie.”

* Singing ability: Doesn’t sing, but does play guitar.

* Why he wears it best: He rocks The Bieber blond.

* Best alternate style: Surfer buzz cut.

* Odds on beating Bieber in popularity: 35 to 1

The Original: Justin Bieber, 16

* Hometown: Stratford, Ontario

* On his hair: “In the future, I may get bored and change it up, but for now I like how it is,” he told US Weekly.